Chromosomes and genes — Difficult
Transfer your understanding to a changed context, justify decisions and check your reasoning. No hints during the test.
Includes extension practice
Chromosomes, genes, alleles, sex inheritance and ploidy are required. Detailed transcription/translation, mRNA/ribosome sequences and selective gene expression in this shared set add depth beyond the list.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- Cambridge 0654 syllabus2028–2029 · B16.1.1–7
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